Posting a selfie with the United Express plane, Instagram user sirbiolojosh - who also recorded the video or the announcement - wrote: "Most of didn't know how to position ourselves in case of emergency landing like this. It was a scary experience."

Authorities said 55 people were safely evacuated from the plane via the emergency slide.

San Antonio Fire Department spokesman Woody Woodward said there was only one minor ankle injury reported, but the person refused treatment because she was concerned about making her connecting flight.

Skywest Airlines said Skywest Flight 5588, operating as United Express from Houston to Monterrey, Mexico, diverted to San Antonio after the crew got a gear indication.

Skywest said there were 51 passengers and four crew members aboard the Embraer-manufactured E175.